Gars Abbey is a monastery on the Inn River in Bavaria, Germany, in the town of Gars am Inn. It was founded in 768 and has been occupied by Benedictine monks, Augustinian Canons Regular, and most recently Redemptorists.

Tassilo III was the duke of Bavaria from 748 to 788, the last of the house of the Agilolfings. He was the son of Duke Odilo of Bavaria and Hitrud, daughter of Charles Martel.